code: def forward_streaming(
      self,
      input_frame: torch.Tensor,
      buffer=None,
  ):
      raise NotImplementedError
  
file_path: espnet/espnet2/enh/separator/abs_separator.py
imports: from abc import ABC, abstractmethod
  from collections import OrderedDict
  from typing import Dict, Optional, Tuple
  import torch
label_desc: Use image node_id 2 for calling the AbsSeparator obj's underlying member method code with example usage: obj.forward_streaming(input_frame, buffer) without return types